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BPC-157 vs TB-500: what is the difference?

A plain comparison of the two peptides most often mentioned together, what each one is and how much research sits behind them.

BPC-157 and TB-500 are often sold as a pair. They are different compounds with different backgrounds.

At a glance

  • BPC-157 is a synthetic chain of fifteen amino acids. Its sequence was derived from a protein found in gastric juice.
  • TB-500 is a synthetic peptide related to thymosin beta-4, a protein found in many tissues. The name is a trade name, and products sold under it are not always the same molecule.

What the research looked at

Both have been studied mainly in laboratory animals.

  • BPC-157 work has centred on models of tendon, gut and skin injury.
  • Thymosin beta-4 research has looked at wound healing, the eye and the heart, with some early human studies of the full protein.

Neither has been through controlled trials in dogs, and neither is an authorised veterinary medicine in the UK.

Why they are sold together

Sellers often describe the two as complementary. That idea comes from the fact that they are different molecules studied in different models. We are not aware of controlled studies testing the combination in dogs.

Sport and regulation

Both appear on the World Anti-Doping Agency prohibited list, which matters for anyone involved in regulated competition, including some canine and equine sports.

Why we sell only BPC-157

We would sooner explain one compound properly than list a catalogue. Our BPC-157 is supplied for research use only.

Read more: Here's what the studies looked at

Published 2026-11-13. Reviewed 2026-11-13. Written by the Peps for Pups team. General information, not veterinary advice.

BPC-157 is supplied for research use only. It is not a veterinary medicine and is not for human or animal consumption.

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